Abstract
ABSTRACT As an antibiotic, tinidazole (TNZ) is usually consumed to reduce the bacterial infection; thus, qualitative determination of the TNZ is very significant. Thus, in this article, the development of voltammetric sensor based on poly-threonine-modified carbon nanotube-mixed graphene paste electrode (PTRMCNTMGPE) for the detection of TNZ was reported. The PTRMCNTMGPE displayed a boosted electrocatalytic effect regarding the voltammetric signal of the TNZ (pH 7.0) compared to the bare electrode. The morphology of the proposed electrodes was characterised by field emission scanning electron microscopy. The charge transfer resistance of the designed electrode was studied through electrochemical impedance spectroscopy. The impact of pH and effect of scan rate was studied. The scan rate study reveals the reduction process of the TNZ was controlled by diffusion. The designed electrode yielded low detection limit (0.2 µM) for TNZ. The proposed electrode exhibited a good reproducibility, repeatability, selectivity and an antifouling feature. The practicability of the developed sensor was explored by detecting the TNZ in tablet and blood serum samples.
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